STEM means: Stem is American slang for a main street or a street frequented by beggars and tramps. Stem isAmerican slang for to beg on the street.Stem is American slang for a pipe used for smoking opium or crack.

Crap means: -
The same word in both countries - but less rude here. I loved watching Brits being interviewed on US chat shows and embarrassing the interviewer when they said something was "total crap".